Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
  • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
  • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
  • A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
  • A01N33/02—Amines; Quaternary ammonium compounds
  • A01N33/12—Quaternary ammonium compounds

Definitions

• the present invention relates to novel compositions which can be used as adjuvants in the field of crop protection, for example in combination with agrochemically active compounds.
• Agrochemically active compounds in particular those which are applied by the post-emergence method by spraying and which are taken up by the plants via the leaf are frequently applied in combination with tank-mix adjuvants.
• the agrochemical formulations are mixed with the tank-mix adjuvants in the spray liquor.
• tank-mix adjuvants are added in order to increase the biological activity of the agrochemically active compounds, such as, for example, insecticides, fungicides, bactericides, herbicides, growth regulators, acaricides or nematicides, and/or to improve the applicability of the active compounds.
• adjuvants are to be understood as meaning materials which for their part are not biologically active.
• the biological activity can be improved, for example, by optimizing adherence to the leaf, wetting, distribution or uptake.
• Some properties of the spray liquor or the spray liquor residue on the treated plant surface which can be optimized are suspendability, emulsifiability, stability, solubility, pH, foaming, surface tension, vapour pressure, compatibility with plants, drift, droplet size or coverage.
• Adjuvants can be divided into different chemical groups (for example surfactants, fatty acid esters, polymers, oils, buffers, organosilicon compounds, latex suspensions, etc.). The use of adjuvants is of great practical importance and described in detail in the specialist literature (see, for example, C. L.
• oils for improving the effectiveness of pesticides by improving the wetting and distribution properties of the spray residues have been described.
• these oils are mineral oils, vegetable oils and esters of these vegetable oils. It is known that vegetable oil esters improve the uptake of many pesticides into the leaf, and that the very low volatility of vegetable oils increases the residual effectiveness of crop protections.
• paraffin oil formulations as summer spray treatment and winter spray treatment is known in practice (for example Oleocin® from Bayer CropScience).
• U.S. Pat. No. 5,580,567 describes compositions comprising, in addition to oil, an emulsifier system and a buffer. These adjuvants have the advantage that the improvement of the biological activity and the possibility to adjust the pH are combined in one product.
• U.S. Pat. No. 3,977,322 describes a composition comprising a mineral oil and a vegetable oil which, as a mixture, improve the effectiveness of selective herbicides.
• a synergistic herbicide composition is described in U.S. Pat. No. 4,755,207.
• These formulations comprise a plant-compatible oil (purified vegetable oil or highly purified paraffin oil), a surfactant and hydrophobic mycoherbicidal spores.
• a further group of adjuvants is that of the ammonium salts. It has already been described in the literature that the activity of various active compounds can be enhanced by adding ammonium salts. However, these are salts which act as detergents (for example WO 95/017817) or salts having relatively long alkyl and/or aryl substituents which act in a permeabilizing manner or increase the solubility of the active compound (for example EP-A 0 453 086, EP-A 0 664 081, FR-A 2 600 494, U.S. Pat. No. 4,844,734, U.S. Pat. No. 5,462,912, U.S. Pat. No. 5,538,937, U.S. Ser. No. 03/0224939, U.S.
• ammonium sulphate as formulation auxiliary, too, has been described for certain active compounds and applications (WO 92/16108); however, here it serves to stabilize the formulation, not to enhance the activity.
• DE 102 58 856 and WO 06/012209 describe adjuvants comprising various surfactants. Like the ammonium salts, these surfactants are added in order to improve the uptake into the plant.
• ammonium is introduced into formulations because the active compounds used are employed as ammonium salts, as is customary in particular for the widely used herbicide glyphosate (for example WO 07/050,090, WO 05/117583, WO 05/013692, WO 06/050141, US 2003/104947, U.S. Pat. No. 5,238,604, DE 197 52 552).
• a separate ammonium salt is added.
• WO 00/67573 describes adjuvant compositions for herbicides. However, for these compositions cationic emulsifiers are essential, whereas the compositions of the present invention comprise anionic surfactants.
• WO 02/34047 describes a formulation auxiliary for pesticides; however, in this auxiliary an ammonium salt is present as a solution in water, not in particulate form.
• the compositions of the present invention are anhydrous.
• Ready mixes of ammonium salts and penetrants such as oils and/or surfactants in a single product are advantageous for the user, for example with a view to accurate dosing and user safety (no transfer and no mixing required).
• ammonium salts in water-based adjuvant compositions has been described in various publications.
• WO 05/046326 and U.S. Pat. No. 5,356,861 describe compositions which, in addition to water and ammonium sulphate, comprise alkylpolysaccharides.
• WO 05/046326 claims an improved uptake of nutrients into the fruits of the treated plant.
• U.S. Pat. No. 5,356,861 discloses the use of a composition for increasing the activity of glyphosate.
• WO 03/092373 mentions formulations which, in addition to water and ammonium sulphate, comprise an iminodipropionate as amphoteric surfactant. These formulations are to offer a comprehensive solution as tank-mix for herbicides.
• ammonium salt in the oil-based formulations the ammonium salt will be present in crystalline form, resulting in problems during formulation.
• the customary ammonium salts are, owing to their hardness, difficult to comminute, and after comminution oil-based formulations comprising ammonium salt tend to be of high viscosity.
• ammonium salts in oil-based suspension concentrates are difficult to stabilize.
• the present invention relates to an oil-based adjuvant composition
• an oil-based adjuvant composition comprising
• oil-based composition means that the compositions according to the invention are substantially free of water.
• the water content is preferably less than 1.5% by weight, particularly preferably less than 0.7% by weight. Owing to the low water content, the ammonium salt of the formula (I) is suspended in the compositions according to the invention.
• the present invention furthermore relates to a process for preparing these compositions and to their use for improving the activity of crop protection compositions.
• oil-based adjuvant composition according to the invention can be prepared by mixing
• oil-based adjuvant compositions according to the invention in combination with formulations comprising agrochemically active compounds are highly suitable for application to plants and/or their habitat.
• oil-based adjuvant compositions according to the invention have low viscosity and very good stability and in particular that even after storage at changing temperatures no significant crystal growth of the ammonium salt was observed. It is also unexpected that they have considerably better biological efficacy than the abovementioned adjuvant compositions of the most similar compositions. Besides, with respect to their activity, the oil-based adjuvant compositions according to the invention surprisingly also surpass analogous preparations which, in addition to the other components, comprise either only ammonium salt or only oil. Based on the prior art described above, such a synergistic effect was unforeseeable.
• the oil-based adjuvant compositions according to the invention have a number of further advantages.
• the number of tank-mix applications required is reduced since a plurality of the properties to be optimized have been combined in the adjuvant compositions according to the invention.
• the user has to mix his pesticides with only one instead of a plurality of mixing partners in the spray liquor.
• An advantage of this is that, when agrochemical compositions are used, dosage errors are avoided and the safety of the users is improved. Also avoided is the use of packaging material for a plurality of tank-mix products.
• Another advantage is that, when diluting the adjuvant composition according to the invention with water, the pH of the spray liquor can be controlled by the selection of the ammonium salt in the product.
• oil-based adjuvant compositions according to the invention have a favourable effect on the biological efficacy of the active components of the formulations to which the adjuvant compositions are added, so that, compared to customary preparations, either a higher efficacy is achieved or less pesticide is required.
• the vegetable oils present in the adjuvant compositions according to the invention are generally known and commercially available.
• the term vegetable oils is to be understood as including, for example, oils from oleagineous plant species, such as soya bean oil, rapeseed oil, maize germ oil, maize kernel oil, sunflower oil, cottonseed oil, linseed oil, coconut oil, palm oil, thistle oil, walnut oil, arachis oil, olive oil or castor oil, colza oil, in particular soya bean oil, rapeseed oil, maize germ oil or sunflower oil and mixtures thereof.
• the vegetable oils (triglycerides) are preferably esters of C 10 -C 22 -, preferably C 12 -C 20 -, fatty acids of glycerol.
• the C 10 -C 22 -fatty acid esters of glycerol are, for example, esters of unsaturated or saturated C 12 -C 20 -fatty acids, in particular those having an even number of carbon atoms, for example erucic acid, lauric acid, palmitic acid, and in particular C 18 -fatty acids, such as stearic acid, oleic acid, linoleic acid or linolenic acid.
• Suitable mineral oils are various commercially available distillate fractions of mineral oil (petroleum). Preference is given to mixtures of open-chain C 14 -C 30 -hydrocarbons, cyclic hydrocarbons (naphthenes) and aromatic hydrocarbons.
• the hydrocarbons can be either straight-chain or branched. Particular preference is given to mixtures having an aromatic portion of less than 8% by weight. Very particular preference is given to mixtures having an aromatic portion of less than 4% by weight.
• Suitable paraffin oils are straight-chain and branched C 14 -C 30 -hydrocarbons. Paraffin oils are also known as base oil or white oil and are commercially available, for example, as Bayol® 85 (Exxon Mobil, Machelen, Belgium), Marcol® 82 (Exxon Mobil, Machelen, Belgium), BAR 0020 (RA.M.oil S.p.A., Naples, Italy), Pionier 0032-20 (Hansen & Rosenthal KG, Hamburg, Germany) or, for example, Kristol M14 (Carless, Surrey, England).
• Suitable fatty acid esters are alkyl fatty acid esters, such as C 1 -C 20 -alkyl C 10 -C 22 -fatty acid esters. Preference is given to methyl esters, ethyl esters, propyl esters, butyl esters, 2-ethylhexyl esters and dodecyl esters. Particular preference is given to methyl esters and ethyl esters.
• Examples of synthetic fatty acid esters are, for example, those which are derived from fatty acids having an odd number of carbon atoms, such as C 11 -C 21 -fatty acid esters. The transesterification can be carried out by known methods, as described, for example, in Römpp Chemie Lexikon, 9th Edition, Volume 2, page 1343, Thieme Verlag, Stuttgart.
• the fatty acid esters can be present in the form of commercially available esters, in particular esters such as rapeseed oil methyl ester, for example Edenor® MESU (Cognis, Germany) or the Agnique® ME series (Cognis, Germany) or in the form of commercially available oil-containing formulation additives, in particular those based on rapeseed oil methyl ester or rapeseed oil ethyl ester, for example Hasten® (Victoria Chemicals, Australia), Actirob® B (Novance, France) or Stefes Mero® (Stefes, Germany).
• esters such as rapeseed oil methyl ester
• Edenor® MESU Cognis, Germany
• Agnique® ME series Cognis, Germany
• oil-containing formulation additives in particular those based on rapeseed oil methyl ester or rapeseed oil ethyl ester, for example Hasten® (Victoria Chemicals, Australia), Actirob® B (No
• Ammonium salts according to the invention are defined by formula (I)
• Preferred salts are ammonium bicarbonate, ammonium tetraborate, ammonium fluoride, ammonium bromide, ammonium iodide, ammonium chloride, diammonium monohydrogen-phosphate, ammonium dihydrogenphosphate, ammonium hydrogensulphate, ammonium tartrate, ammonium sulphate, ammonium nitrate, ammonium thiosulphate, ammonium thiocyanate, ammonium formate, ammonium lactate, ammonium acetate, ammonium propionate, ammonium butyrate, ammonium pentanoate, ammonium citrate, ammonium oxalate, ammonium carbonate, ammonium pentaborate, ammonium sulphite, ammonium benzoate, ammonium hydrogenoxalate, ammonium hydrogencitrate, ammonium methylsulphate and ammonium tetrafluoroborate.
• Particularly preferred salts are diammonium monohydrogenphosphate, ammonium dihydrogen-phosphate, ammonium sulphate, ammonium nitrate, ammonium thiosulphate, ammonium thiocyanate, ammonium formate, ammonium lactate, ammonium citrate and ammonium oxalate.
• Particularly preferred salts are diammonium monohydrogenphosphate, ammonium dihydrogen-phosphate and ammonium sulphate.
• Emulsifiers which may be used are, for example, ethoxylated nonylphenols, reaction products of alkylphenols with ethylene oxide and/or propylene oxide, ethoxylated arylalkylphenols, furthermore ethoxylated and propoxylated arylalkylphenols, and also sulphated or phosphated arylalkyl ethoxylates and/or arylalkyl ethoxypropoxylates, where sorbitan derivatives, such as polyethylene oxide sorbitan fatty acid esters and sorbitan fatty acid esters may be mentioned by way of example.
• Suitable nonionic surfactants are all substances of this type which can usually be employed in agrochemical compositions.
• Polyethylene oxide/polypropylene oxide block copolymers, polyethylene glycol ethers of straight-chain alcohols, reaction products of fatty acids with ethylene oxide and/or propylene oxide may be mentioned as being preferred, furthermore polyvinyl alcohol, polyvinyl pyrrolidone, mixed polymers of polyvinyl alcohol and polyvinyl pyrrolidone and also copolymers of (meth)acrylic acid and (meth)acrylic acid esters, furthermore alkyl ethoxylates and alkylaryl ethoxylates which may optionally be phosphated and optionally be neutralized with bases, an example being sorbitol ethoxylates.
• Suitable anionic surfactants are all substances of this type which can usually be used in agrochemical compositions. Preference is give to alkali metal and alkaline earth metal salts of alkylsulphonic acids or alkylarylsulphonic acids.
• a further preferred group of anionic surfactants or dispersants are the following salts that have poor solubility in vegetable oil: salts of polystyrenesulphonic acids, salts of polyvinylsulphonic acids, salts of naphthalenesulphonic acid/formaldehyde condensation products, salts of condensation products of naphthalenesulphonic acid, phenolsulphonic acid and formaldehyde and also salts of lignosulphonic acid.
• Suitable penetrants in the present context include all those substances which are typically used to enhance the penetration of agrochemically active compounds into plants. Penetrants are defined in this context by their ability to penetrate from the aqueous spray liquor and/or from the spray coating into the cuticles of the plants and thereby to increase the mobility of active compounds in the cuticles. The method described in the literature (Baur et al., 1997, Pesticide Science 51, 131-152) and below can be used to determine this property.
• Suitable penetrants are, for example, alkanol alkoxylates.
• Penetrants according to the invention are alkanol alkoxylates of the formula
• a preferred group of penetrants are alkanol alkoxylates of the formula
• a further preferred group of penetrants are alkanol alkoxylates of the formula
• a further preferred group of penetrants are alkanol alkoxylates of the formula
• a further preferred group of penetrants are alkanol alkoxylates of the formula
• a further preferred group of penetrants are alkanol alkoxylates of the formula
• a further preferred group of penetrants are alkanol alkoxylates of the formula
• alkanol alkoxylates of the formula (II-a) are ethoxylated Guerbet alcohols of the formula (II-a-1):
• Particularly preferred alkanol alkoxylates of the formula (II-f) are compounds of this formula in which
• alkanol alkoxylates of the formulae given are known and in some cases are available commercially or can be prepared by known methods (cf. WO 98-35 553, WO 00-35 278 and EP-A 0 681 865).
• Suitable antifoams include all substances that can normally be used for this purpose in agrochemical compositions. Preference is given to silicone oils and magnesium stearate.
• Suitable preservatives include all substances that can normally be used for this purpose in agrochemical compositions of this type. Examples that may be mentioned include Preventol® (from Bayer AG) and Proxel®.
• Suitable antioxidants include all substances that can normally be used for this purpose in agrochemical compositions. Preference is given to 2,6-di-tert-butyl-4-methylphenol.
• Suitable spreading compositions include all substances that can normally be used for this purpose in agrochemical compositions. Preference is given to alkylsiloxanes.
• Suitable colorants include all substances that can normally be used for this purpose in agrochemical compositions. Mention may be made, by way of example, of titanium dioxide, pigmentary carbon black, zinc oxide and blue pigments, and also Permanent Red FGR.
• Suitable thickeners include all substances that can normally be used for this purpose in agrochemical compositions and which act as thickeners. Preference is given to inorganic particles, such as carbonates, silicates and oxides, and also organic substances, such as urea/formaldehyde condensates. By way of example, mention may be made of kaolin, rutile, silicon dioxide, finely divided silica, silica gels, and also natural and synthetic silicates, such as bentonite, attapulgite or montmorillonite, and additionally talc.
• inorganic particles such as carbonates, silicates and oxides
• organic substances such as urea/formaldehyde condensates.
• kaolin rutile, silicon dioxide, finely divided silica, silica gels, and also natural and synthetic silicates, such as bentonite, attapulgite or montmorillonite, and additionally talc.
• the present invention relates to an oil-based adjuvant composition
• an oil-based adjuvant composition comprising
• compositions according to the invention may be varied within a relatively wide range. Preference is given to compositions comprising
• compositions comprising
• the preparation of the oil-based adjuvant compositions according to the invention is carried out by mixing the components in the particular ratios desired with one another.
• the order in which the components are mixed with one another is immaterial.
• the solid components are employed in a finely ground state.
• the temperatures can be varied within a certain range.
• the process is carried out at temperatures between 10° C. and 60° C., preferably between 15° C. and 40° C.
• Suitable for carrying out the process according to the invention are customary mixers and grinders used for preparing agrochemical formulations.
• oil-based adjuvant compositions according to the invention are formulations which remain stable even after relatively long storage at elevated temperatures or in the cold, since no crystal growth is observed. By dilution with water, they can be converted into homogeneous spray liquors.
• the adjuvant compositions according to the invention can be used in combination with various pesticide formulations. Preference is given to pesticide formulations comprising one or more active compounds from the group of the insecticides, fungicides, bactericides, herbicides, growth regulators, acaricides or nematicides. In addition, they may be applied in combination with fertilizer and/or further nutrients.
• the optimum effect of the application may be influenced by the nature of the treated plant, by the disease, by the spray apparatus, by the spray volume, by the pressure, by the droplet size, by the mixing partners, by environmental factors and other factors. Accordingly, it is important to monitor the spray coating formed by the treatment and—if required—to adjust the use concentration of the adjuvant composition.
• the weight ratio of agrochemically active compound to adjuvant composition according to the invention is generally in the range of from 1:10 000 to 100:1, in particular from 1:1000 to 10:1, depending on the activity of the agrochemically active compound in question.
• the concentration of agrochemically active compound is generally from 10 ⁇ 6 to 10% by weight, preferably from 10 ⁇ 5 to 4% by weight, in the composition applied, for example the spray liquor, at an application rate of from 1 to 5000 1/ha, preferably from 50 to 1000 1/ha.
• the concentration of the adjuvant composition according to the invention is generally from 0.005 to 5% by weight, preferably from 0.05 to 3% by weight, in the composition applied, for example the spray liquor, at an application rate from 1 to 5000 1/ha, preferably from 50 to 1000 1/ha.
• the adjuvant composition according to the invention with an agrochemical formulation
• half of the spray tank is filled with water and stirred.
• the various products are added, in the following order: initially, the solid formulations are stirred in, then the suspension concentrates and the adjuvant composition according to the invention and finally the homogeneous liquid formulations.
• the spray tank is filled with water and homogenized again.
• Plants are to be understood as meaning in the present context all plants and plant populations such as wanted and unwanted wild plants or crop plants (including naturally occurring crop plants).
• Crop plants can be plants which can be obtained by conventional plant breeding and optimization methods or by biotechnological and genetic engineering methods or by combinations of these methods, including the transgenic plants and including the plant cultivars protectable or not protectable by plant breeders' rights.
• Plant parts are to be understood as meaning all parts and organs of plants above and below the ground, such as shoot, leaf, flower and root, examples which may be mentioned being leaves, needles, stalks, stems, flowers, fruit bodies, fruits and seeds, and also roots, tubers and rhizomes.
• the plant parts also include harvested material, and also vegetative and generative propagation material, for example cuttings, tubers, rhizomes, offshoots and seeds.
• the agrochemically active compounds contained exhibit better biological efficacy than in the application in the form of the corresponding conventional formulations.
• compositions according to the invention are available at the following suppliers:
• test results are compiled in the tables below.
• This test measures the penetration of active compounds through enzymatically isolated cuticles of apple leaves.
• Leaves used are cut in the fully developed state from apple trees of the Golden Delicious variety.
• the cuticles are isolated as follows:
• the cuticles were placed centrally using tweezers on the edges of the diffusion cells, which were coated with silicone grease, and sealed with a ring, which was likewise greased.
• the arrangement is chosen so that the morphological outer face of the cuticles is directed outwards, in other words to the air, while the original inner face is facing the interior of the diffusion cell.
• the diffusion cells were filled with water or with a mixture of water and solvent.
• Tembotrione 20% by weight Texapon ® K12 30% by weight Sipernat ® 22 S 20% by weight Sispersant ® SS 10% by weight Calgon ® T 5% by weight Fluowet ® PP 0.2% by weight Kaolin ® remainder
• Rapeseed oil methyl ester was used as RME EW 500 (50% rapeseed oil methyl ester, 0.5% Pluronic® PE 10500 (BASF), remainder water).
• Rapeseed oil methyl ester was used as RME EW 500 (50% rapeseed oil methyl ester, 0.5% Pluronic® PE 10500 (BASF), remainder water).
• the water was evaporated in each case and then the chambers were inverted and placed into thermostatted troughs, where in each case the outside of the cuticles was exposed to a saturated aqueous calcium nitrate 4-hydrate solution. Accordingly, the penetration which began took place at a relative atmospheric humidity of 56% and a set temperature of 25° C. At regular intervals, samples were taken using a syringe and the amount of penetrated active compound was measured using HPLC.

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• Engineering & Computer Science (AREA)
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• Pest Control & Pesticides (AREA)
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• 2007
  • 2007-06-12 EP EP07110022A patent/EP2002719A1/de not_active Withdrawn
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  • 2008-05-30 WO PCT/EP2008/004292 patent/WO2008151725A1/de active Application Filing
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